Chekhov’s theme in the story is finding happiness. Nicholai finds happiness in eating strawberries. He thinks he can make the peasants happy by giving them half a bucket of vodka. People pursue happiness in different ways. Some find happiness in eating, drinking and merrymaking. Some find happiness in strict ascetic life. Some find happiness in serving others and making sacrifices for them.
Chekhov develops his theme by using different techniques. There is a story within a story. Ivan and Bourkin are walking. It is raining and they take shelter in the farmhouse of Aliokhin. Then Ivan tells the story of his brother Nicholai, how he sought happiness. Chekhov uses realism in unfolding the story. The account of the life of Ivan and his brother Nicholai in the village after the death of their father is highly realistic. There is also realism in the description of Aliokhin and his farmhouse.
Irony is an important ingredient Chekhov has used. Nicholai eats gooseberry after gooseberry to feel happy and contented. We know how gooseberry is. Nicholai lived all his life like a miser, not eating and drinking properly, not dressing properly, to eat gooseberries, He even married an ugly widow to eat gooseberries!
Chekhov is a master in the use of symbolism. He has used the symbol of rain to great effect. It gives the entire story a sad and melancholic mood. The redhaired dog which looks like a pig is an excellent symbol. So is the symbol of the family sitting round the table enjoying their coffee. Both Nicholai and Ivan have their peculiar, even perverted, sense of happiness. It is a relevant question to ask whether our own sense of happiness is normal or something queer.